1.	Solve sin x cos x - cos x = 0 for principal values of x. Express solutions in degrees.
		A.	150°, 90°	B.	60°, 90°
		C.	30°, 60°	D.	30°, 90°
		Hint
	2.	Solve 4 sin2 x + 3 = 4 for principal values of x. Express solutions in radians.
		A.	,	B.	-,
		C.	,	D.	-,
		Hint
	3.	Solve + 1 = 2 sin x for all real values of x.
		A.	k	B.	+ k
		C.	+ 2k	D.	+ 2k
		Hint
	4.	Solve sec2 x = - 2 for -90° < x < 90°.
		A.	-30°, 30°	B.	60°
		C.	-60°, 60°	D.	0°
		Hint
	5.	Solve 4 sin2 x > 3 for 0 x .
		A.	0 x	B.
		C.		D.
		Hint